Category:Old Bess (beam engine)
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Old Bess, James Watt's early beam engine of 1777
Media in category "Old Bess (beam engine)"
The following 4 files are in this category, out of 4 total.
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Old bess beam engine may 2015.JPG 4,568 × 3,448; 4.19 MB
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Old bess steam engine 1777.jpg 2,892 × 2,772; 3.6 MB
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Science Museum 20190311 145123 (49362584436).jpg 3,024 × 4,032; 963 KB
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Science Museum 20190311 145126 (49362703207).jpg 4,032 × 3,024; 1.43 MB
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